Java Program to Print 1 and 0 in Alternative Rectangle Columns

Write a Java program to print 1 and 0 in alternative rectangle columns using for loop.

import java.util.Scanner;
public class AlternativeColumns1and01 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Numbers of Rows = ");
		int rows = sc.nextInt();
		
		System.out.print("Enter Numbers of Columns = ");
		int columns = sc.nextInt();
		
		System.out.println("Printing 1 and 0 Numbers in Alternative Columns");
		
		for (int i = 1 ; i <= rows; i++ ) 
		{
			for (int j = 1 ; j <= columns; j++ ) 	
			{
				if(j % 2 == 0) {
					System.out.printf("0 ");
				}
				else {
					System.out.printf("1 ");
				}
			}
			System.out.println();
		}
	}
}

This Java example prints the rectangle of 1 and 0 in alternative columns using a while loop.

import java.util.Scanner;

public class AlternativeColumns1and02 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Numbers of Rows and Columns = ");
		int rows = sc.nextInt();
		int columns = sc.nextInt();
		
		System.out.println("Printing 1 and 0 Numbers in Alternative Columns");
		
		for (int i = 1 ; i <= rows; i++ ) 
		{
			for (int j = 1 ; j <= columns; j++ ) 	
			{
				System.out.printf("%d", j% 2);
			}
			System.out.println();
		}
	}
}

Enter Numbers of Rows and Columns = 8 15
Printing 1 and 0 Numbers in Alternative Columns
101010101010101
101010101010101
101010101010101
101010101010101
101010101010101
101010101010101
101010101010101
101010101010101

Java Program to Print 1 and 0 in alternative columns of a rectangle using do while loop.

import java.util.Scanner;

public class AlternativeColumns1and03 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		int i = 1, j;
		
		System.out.print("Enter Numbers of Rows and Columns = ");
		int rows = sc.nextInt();
		int columns = sc.nextInt();
		
		System.out.println("Printing 1 and 0 Numbers in Alternative Columns");
		
		while ( i <= rows ) 
		{
			j = 1 ;
			while( j <= columns ) 	
			{
				System.out.printf("%d", j% 2);
				j++;
			}
			System.out.println();
			i++;
		}
	}
}

Enter Numbers of Rows and Columns = 10 20
Printing 1 and 0 Numbers in Alternative Columns
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010

This Java example prints the rectangle of 0 and 1 in alternative columns.

import java.util.Scanner;

public class AlternativeColumns1and04 {
	
	private static Scanner sc;
	
	public static void main(String[] args) {
		
		sc = new Scanner(System.in);	
		
		System.out.print("Enter Numbers of Rows and Columns = ");
		int rows = sc.nextInt();
		int columns = sc.nextInt();
		
		System.out.println("Printing 0 and 1 Numbers in Alternative Columns");
		
		for (int i = 1 ; i <= rows; i++ ) 
		{
			for (int j = 1 ; j <= columns; j++ ) 	
			{
				if(j % 2 == 0) {
					System.out.printf("1");
				}
				else {
					System.out.printf("0");
				}
			}
			System.out.println();
		}
	}
}

Enter Numbers of Rows and Columns = 14 28
Printing 0 and 1 Numbers in Alternative Columns
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101
0101010101010101010101010101